During December 2025, Bunk focused on enhancing test reliability and CI stability across the FEniCS/dolfinx and TheGiraffe3/endless-sky repositories. He addressed compatibility issues in dolfinx by updating MPI test reference count assertions to support Python 3.14, ensuring tests remained accurate with evolving language versions. In endless-sky, he improved the CI pipeline by extending integration test timeouts, reducing false negatives from longer-running tests. His work leveraged Python, CMake, and CI/CD best practices, emphasizing robust unit testing and test harness adjustments. Although the period involved no new features, Bunk’s targeted bug fixes contributed to more dependable and maintainable development workflows.